I'm new with node.js and I'm trying to collaborate in a project adding a mocha test suite for it. The issue that I have at the moment is the following

ReferenceError: Board is not defined
at new Game (/Users/.../dr_mojo/public/javascripts/game.js:8:20)
at Context.<anonymous> (/Users/.../dr_mojo/test/test.game.js:13:17)
at Test.Runnable.run (/usr/local/lib/node_modules/mocha/lib/runnable.js:213:32)
at Runner.runTest (/usr/local/lib/node_modules/mocha/lib/runner.js:343:10)
at Runner.runTests.next (/usr/local/lib/node_modules/mocha/lib/runner.js:389:12)
. . .

As you can see the error is in game.js:8 the thing is that I don't know how to configure it properly given that when the game is playing it works ok, this means that new Game() works ok and the problem is that I'm not configuring it properly from the test suite. I'll appreciate any help. Thanks in advance.